Method and device for measuring a roll machining tool

2. The method as claimed in claim 1, wherein the steps (a) to (d) are carried out for a plurality of virtual contact points along the virtual cutting edge.

3. The method as claimed in claim 2, wherein a compensating curve that describes the real cutting edge is calculated from measurement results which have been determined for various contact points on the same real cutting edge.

6. The method as claimed in claim 1, wherein the measuring device is arranged in a spatially fixed manner during the execution of the method and the setting of the relative orientation and of the relative position is effected by modifying the orientation of the tool axis in space and the position of the tool in space.

7. The method as claimed in claim 1, wherein the measuring device provides a sensing means which operates in a contactless or contacting manner, and wherein the relative orientation and the relative position are calculated and set in such a manner that the sensing means contacts the virtual cutting edge at the calculated virtual contact point in a tangential manner.

8. The method as claimed in claim 7, wherein the sensing means is cylindrical in form.

9. The method as claimed in claim 8, wherein the sensing means defines a cylinder axis, a cylinder radius and a cylindrical sensing surface extending at a distance from the cylinder axis, said distance corresponding to the cylinder radius, and wherein the relative orientation and the relative position are calculated and set in such a manner that the cylinder axis extends parallel to a tangential plane on the virtual cutting edge at the virtual contact point, and that the cylinder axis is at a distance from said tangential plane which corresponds to the cylinder radius.

10. The method as claimed in claim 9, wherein the cylinder axis extends along a flank of a virtual workpiece which is in rolling engagement with the virtual tool.

12. The method as claimed in claim 11, wherein a deviation between the detected actual angle of rotation and a desired angle of rotation calculated for the virtual cutting edge is determined.

13. The method as claimed in claim 11, wherein the measurement in step (d) is carried out for multiple or all cutting teeth of the tool by the tool being rotated sufficiently far about the tool axis that multiple or all cutting teeth interrupt the light beam and unblock it again one after another.

14. The method as claimed in claim 7, wherein the sensing means is a cylindrical sensing finger.

15. The method as claimed in claim 7, wherein the measurement in step (d) is effected at a measuring position, and wherein a calibration measurement for the measuring position is carried out prior to and/or during the machining of a workpiece.

18. The method as claimed in claim 1, wherein the method is carried out whilst the tool is situated on a tool spindle by way of which machining of workpieces also takes place.

20. The device as claimed in claim 19, wherein the controller carries out the above steps (a) to (d) for a plurality of virtual contact points at various positions along the virtual cutting edge.

23. The device as claimed in claim 22, wherein at least one workpiece spindle for clamping a workpiece to be machined is additionally arranged on the movable carrier.

24. The device as claimed in claim 19, wherein the measuring device provides a sensing means which operates in a contactless or contacting manner, and wherein the controller calculates and sets the relative orientation and the relative coordinates in such a manner that the sensing means contacts the virtual cutting edge tangentially at the calculated virtual contact point.

25. The device as claimed in claim 24, wherein the sensing means is cylindrical in form.

27. The device as claimed in claim 24, wherein the sensing means is a cylindrical sensing finger.